That is a bug in Spybot. There has been a beta fix released for it. Just download it on top of your current version. It will change your version to 1.3.1TX After you download it, run Spybot S&D, let it fix the exploit, then reboot and run it again. It should be gone, if not, just put it into ignore until Spybot comes out with a permanent fix for it which should be soon. I'm not sure if the rebooting is totally necessary but it seems to work better that way.
I used spybot to scan my computer and found DSO EXPLOIT (something in registry) and spybot "fixed", but apprently not. Everytime, I scan my system, "DSO EXPLOIT" always appeared. Is it a virus? Any one encounter this before? How to remove it?